Trichoderma Asperellum HM-8 Biocontrol for Root Rot and Basal Rot

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Solution Overview

Problem

Current methods for controlling sweet potato root rot and ginger stem basal rot, primarily relying on chemical pesticides, face issues of environmental pollution, pesticide residues, and resistance development, necessitating a more sustainable biological control solution.

Innovation Solution

Utilization of Trichoderma asperellum HM-8, a microbial agent with high spore count, to antagonize Fusarium solani f. sp. batatas and Erwinia, formulated into a microbial agent with soluble starch, effectively controlling both diseases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical pesticides are used to control sweet potato root rot and ginger stem basal rot, then disease control effectiveness is improved, but environmental pollution and pesticide residues increase

Engineering Contradiction:

Improvedisease control effectivenessVSAvoidenvironmental pollution and pesticide residues

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces chemical pesticide systems with a biological control system using Trichoderma asperellum HM-8. The microbial agent produces antibacterial substances and competes for nutrients with pathogenic bacteria, achieving disease control through biological mechanisms rather than chemical toxins, thereby eliminating environmental pollution and pesticide residues while maintaining effective disease control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The Trichoderma asperellum HM-8 strain exhibits self-defensive capabilities through production of antibacterial substances and competitive exclusion of pathogens. The microbial agent autonomously controls the disease without requiring external chemical intervention, sustaining effective disease management through its inherent biological properties

Inventive Principle:

Principle #25Self-service

2Reliability

If chemical pesticides are used extensively, then disease control is improved, but resistance development and toxicity to non-target organisms occur

Engineering Contradiction:

Improvedisease controlVSAvoidresistance development and toxicity to non-target organisms

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent substitutes chemical pesticide mechanisms with biological control mechanisms. Trichoderma asperellum HM-8 controls diseases through production of antibacterial substances and competitive exclusion, avoiding the development of resistance that occurs with chemical pesticides and eliminating toxicity to non-target organisms inherent in chemical pesticide systems

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the harmful effect of pathogenic bacteria into a beneficial control mechanism. By using Trichoderma asperellum HM-8 to produce antibacterial substances and compete for nutrients, the system transforms the disease problem into an opportunity for biological control, eliminating the harmful effects of chemical pesticides while maintaining effective disease control

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Trichoderma asperellum HM-8 achieves control efficacy of 88.09% for ginger stem basal rot and 80.20% for sweet potato root rot, significantly increasing yields and reducing environmental pollution by replacing chemical pesticides.

Implementation Method 1

The main body has good antagonistic activity against Fusarium solani f. sp. batatas and Erwinia, with inhibition rates reaching 100% and 80% respectively

Methodology Applied

Scientific EffectAntibacterial substance production:

Implementation Method 2

The main body has good antagonistic activity against Fusarium solani f. sp. batatas and Erwinia

Methodology Applied

Scientific EffectNutrient competition:

Data Source

PatentUS20260013511A1Trichoderma asperellum hm-8 and applications thereof

Publication Date: 2026.01.15 GUO YANG INTL MICROBIOLOGY GROUP

AI summary

A Trichoderma asperellum HM-8 of the invention has the dual ability to antagonize Erwinia and Fusarium solani f. sp. batatas. The microbial agent prepared from the Trichoderma asperellum HM-8 strain can efficiently control sweet potato root rot and ginger stem basal rot. The spore count of Trichoderma asperellum HM-8 is not less than 108 CFU/g.